Boiler-tube cleaner.



R. 0. HODGE.

BOILER TUBE CLEANER APPLIUATIQN Umm Nov. 15, 1909.

Patented June 24, 1913,

UNITED STATES PATENT oEEiCE.

ROBERT o. HCDGE, or BUFFALO, NEW lYCRK, ASSIGNCR, BY DIRECT AND MEs'ivE AssIGNMEN'rs, 'roDIAMoND/PCWER. SPECIALTY COMPANY, or DETROIT, MICHIGAN,

A CORPORATION OF 'M-ICHIGAN.

oILERJrUBE CLEANER.

i Sneeificatiovn of Letters Yatent.

Application filed Noveliier 15, 1909. Serial No. 528,260.

citizen of the 'Uniti-d' States. rcsidingnt.

llullalo. in thu county` of Erie and Stuteof .Yi-w York, have invented now and useful 'lniinfoi'ounnlr; in lloiler-'luhe Cleaners, of which the following is a Specification.

This .inrrnlion-relaleu lo .that of holler iuhe or flue Cleaners hij-which the cleaning nllcct' is produced by directing siriani toward a part.l of the fluevarea at a time and successirel y over the different, parts of the flue arca so as to Concentrate the strain pressure and obtain the maximum cleaning effect of. the Same. lt has heen found in practice that-the greatest elliCionC-y oftlie-.Steain' is obtained for leaning the V tubes when thejsteam is deliri-red (lircctlylor nearly sovfrom the supply device into the .tul'yesrinasjniuch as the steam 'whenl thus delivered does'iiot- 'ina terially lose ilsforeeby-the time itstrikes the tubes. v

(lne. of the objcets. of this'in'vention is to produce a 'tube Cleaner ot .this character.l which permits of diretingthe steam an (.:lose'rango sii zesively into the differenttubos or finos of the boiler anu in a direction lengthwisethereof or nearly so.

Another-object Vofthis invention is the production of zi flue, Cleanerihaving lthis Capacity ywhich operates equallyA effective von the tubes at the outer or marginal part of the tuho zrea andthe tubes at antlnear the conter of this tube area, thus rendering' the Saniepariif'ularly desirable Vfor use in boilers haringf a wry large fluo area. My Inventum has. the further object to provide a tube cleaner which is capable of Santiaily lengthwise into the Several flues and which is Capable of retraction out of the urinlmelion chamber when notv in 145e so that' ilul Cleaner will not he burned or.wo rn uu'- dul): hy the lira( of the. furnace'. i

ln the acc'onii-anying drawings.' Figure 1 i.: a' fragmentary verticalv longihnlin-al' Sec tion of the roar part of a holler and the rear wall of the Combustion chamber in fcoiineclizln with in); improved tube Cleaner. Fig. 2 is a vertical long gi-tudinal seetion, on an enlarged scale., of my iniproil'ed tube Cleaner showing Ihr parts, in the position whiehthey occupy when thi.i (leaner in use. Figs. 3,

ig steam" al' close range and"sub @blind 5 are cross. sectionr, on an enlarged .,(V www 10u-v Sealey 1n the correspondingly numbered lines in Fig. 2. Fig. Gis a. fragmentary longitudinal section in line' 6 6, Fig. -7. Fig. 7 is' :i vertical Cross section, onzin' enlarged scale, in line 7--7, Fig. 3. 'Fig'. Sifi frag;- inontary liingitudinafl section, on an enlarged scale. showing a modification of the means for retreating the steam 'delivery nozzle.

Similar letters of reference indicate Corresponding parts throughout the Several views.

Although niy improved t-uoe .Cleaner is applicable to various fornisoffhoilers und vsett-ings that shown inthe drawings, as an Patented June 24, 1913.

example, comprisesa, body A which is provided tilts-rear end with a hea'l or flue Sheet a, a plurality of horieontal tubes or tlus L extending at their rear 'ends through the ytube Sheet and opening into-.the cour'v bustion Chamber or heat. passage- B in frear of the boiler, and an. uprightre'ar wall C forming the baci: of the combuSlLiOn cha-m".- bei'. As Shown in the drawings; thiwall is Constructed of brick and form-parket the boiler Setting as is usual in the case of sta .tionary boilers hut. in marine boilers this wall usually forms part of the boiler itself and. constitutes the rear water leg thereof.

The preferred einhodhnent of my invention which is shown in 'the drawings is as folloaezl) represents the outer stationar shell or casi-ngr of the Cleaner which is pretierably Constructed in the forni Ufa tube which is arranged horizontally within an opening in the rezir wall ofthe Combustion chamber so'that its inner end ojrende nearly to the front side of this-'wall and its rear or mixing iS clim-ri by means'nf a cap ll which is preferably removably Secured lo tlnl rasing h v mean-i of an (external screw thread fornxrd `on lleeeap and engaging ii'ith an internal Screw/thread nn thioxd of the Cas This tuhuios ing'. :Steam isadmitted to the casing at the 'outer or rear end thereof by means of a supl Y plypipe F which connects with a laterally pleted; 10 i projecting-nipple .f on the outer end of the cajsng'and which is provided with a hand valve fvwhereby the steam 'may be turned n for operatingthe cleaner and turned oil` when the .cleaning operationhas been com- Within` the shell or casing is arranged an outer or'rearv -car'rier section which preferi ably has the" form of a tubular body G arranged lengthwise within the casing and project-ing: at itsfront end forwardly through-'theopeningfrmed by the bore ofl shellor casingr and the interior of the rear carrier section vare placed in communication with each other. The front end of the rear carrier sectionis vreduced forming a forwardly projecting shoulder g on the periphery of this end of :the carrier which bears against the rearwardly facing shoulder do'f thefshell, and the rear end ofthe hub of the couplingTl lhead vbears against. the inner or front side of the rear head of the shell,

-the'reby confining the near carrier section against Iengt-hwiseror axial movement in the shell but permittingrotary movement of the same therein `*for* a purpose to be hereinafter mentioned. The front head p1 of the rear carrier section is preferab y formed integrally with this section and is arrangedobliquely with reference to its axis of rotation.

I represents a front or inner cai-riet section which is of hollowor tubular -form and which is capable of sliding lengthwise through 'an openingiin the front -head g1 ofv the rear carrier' section forthe purpose of protecting or extcndingthe front section forwardly beyond therear section when the cleaner is in use or withdrawing the front `cleaner is not in use.

seotion'rearwardly `into the re'ar section so that its front end is nearly ush with thefront end of the rear section when the By means of this telescopic connection between the front and rear sections of the carrier the Same can be extended for Adelivering the steam close to the ends or mouths of the t'uhes or tlues to he cleaned and to he contracted or shortened so that the front' carrier section is withdrawn from the heat. passage Within the romlmsiion chamber. 'lhe opening i is arranged on one side of theaxis of the rear its projected position the rear end ofthe 'sen'iblcd by means of a radial screwla, as'

carrier section and in the rearmost part of l innerer concave side faces rearwardly or toward the innermost end of the inclined head vgl on the front end of therear carrier section, the front and`rear carrier sections being retained in this relative position` preferably, by providing opposite sides of the front carrier section with flat parallel longitudinal faces j which engage with eorrespondingly shaped .faces jion the adjacent part of the bore of the opening i in the frontA end or head of the Arear carrier section. In

front carrier section is arranged at substantially right angles to theoblique head g at the front e'nd'of the rear section, whereby the front end of the-latter is caused to projectlaterally with reference tothe axis of rotation ofthe rear carrier section.

The Arot-ary movement of the carrier sections may be effected by various means'but preferably by the means shown inthe drawings which consist of anouter hollow or tubular shaft extending lengthwise through a stuing box lc arranged centrally on the outer head 'of the casingr and connected at its front end withthehub of the coupling head of the rear carrier section, and a crank or handle kl secured to the rear or oute end of this hollow'shaft. e

Various meansginay beeprovided for vmov- .t ing the fr` nt carrier section into and out of the rear rrier section but the means shown in the drawings are preferred and are constructed as f ollows:v L represents a screw rin 'having an external thread engaging,` wit the internal thread of the rear carrier section and -providedfin its bore with a spherical i socket which receives a hollow spherical knuckle'or ball Z. The rear side of' this 'knuckle is open for the admission of steam from the rear carrier section and its front side is p rovide'd with a steam outlet the frontcarrier section and lis connected therewith bya screw joint. To permit of inserting the knuckle into the spherical socket of its lscrew lring and the removal of the same therefrom one half of this socket in frontof the center of the joint-is formed by anvinternal integral flange ll on the front part of the screw ring while the rear Apart of this socket is formed by a sleeve lz which is securcd by a screw joint in the rear part of the bore of this screw ring, the-two parts being preferably heldl against turning relatively to each other when the cleaner is asshown in Fig. 45 or by any other suitable means. Upon turning the Screw ring in one direction, the front carrier section and the parts connected therewith are moved rcarwanlly relatively. (o the rear carrier section so 'A nipple ll which opens into the outer end of v the opposite direction relatively to the roarwhile upon turning the screw ring in the opposite direction the front carrier section :incl the perts'connected therewith ireiiioved in nectedwith the removable sleeve thereof by means of inclined arms m; a hollow inner Shaft M vextending' lengthwise tlirougli'tlie f hollowouter shaft K of the rear carrier sec' tion and a stiitiiiig box m'f"iit`the' rear end of Athe latter ind Vconnected :it its. front cnil .dotted lines in'. Fig7 2'.

with the'liiib-'vm e cop N secured vto the reni" 'endet the inner hollow shaft, and a crank or handle' nsecured -to the regir ySide of smid cap. U pon turningr the crank fri, in one direc tio-n ortho other the shifting screw ring is caused to move either forward orbsiclrvard in the rear cari-rior section and either project or retract-the front carrier section connected therewith. The forward moveincnt'of the. front carrier section is preferably limited by' means of a shoulder vo formed on the exterior of the front carrier section :it `the rear vend thereof and engging with 'the reiirside i of the 'oblique front. head g1 of the rear cerriei' section,'zis` shownin Fig. 2. The backward or Arearr'vlviird movement ol the screw ringaiid the parte connected therewith may also .be limi-ted by various means` but preferably by engagement of the rear end oj the hub ofthis ring with' the frontenrlo the hubl olf the renicarrier section,l as s liowii'by P represents whereby the steen-i is delivered frbin'pthe front carrier section into the months or open inlet ends of the boiler tube or flues. This nozzle is preferably-constructed iii/ the form of a curved tube which /is concentric with the curved front carrier sectioiiand is capable of being projected and retracted with reference to thefronf"J ceri'ier section Sir/'as to brin-g the Aslciiin outlet ot' the nozzle'rloee to theends oifltlie tubes when the cleaner is iii use :ind to retract the noz- 'zleon ofthe hciit. passige when the cleaner le no(l in use. Fortliis purpose thc nozzle is .mounted on the front carrier section so :is to iis nozzle is preferably effect menus two of which :ire s own in the drziwl l ifcui'w:ii .ll facingsliouidii' :il llic li'oi'il. cnil of the front. Currier scclioin zo; Shown iii lig'. 2. 'l`lic turning :novi-invul oll llul nozzle iiiul tlu. l'ioiil. i'ziiiiiz' ASection iclulivcly'lo ezul'i ,other is prigfcriibly proventi-il b y nicziuS of coiii'ieratiiig l'lzzl luces fl, q' on Aopposite longitudinal airline of thc uozzlc und on opposite sides of the here if the front-opening l in the lii'oiil t-:iii'icr section, :is shown in Fig.v 5, thercbi" retaining the nozzle und liront carrier section always iii :i concentric position relatively to czul'i other.

Al. its front eiul und projecting' ioriviiri'lly tlui'efroiii the nozzle proiiilcilwith :i

from. steam delii'ci'y nipple r iiiul' iu reni' of tliirw' front nipple uuu" on the convex side thereof the nozzle ie; provided with :in addizionizl rif-iii' or auxiliary fs einn delivery nipple 1^. iiid preferably at Such :in angle relatively to cach other that in the foremost projected po'- 1:iitiori-otthe nozzle und front cei'rici' section the froiil nipple 1 iiiolincs 'forwardly :nulhilernlly whii the ri-zir nipple rl is arranged parallel with ric uxiss of rotation ofthe earlier.

The backward movement of the nozzlcis These two nipplce diverge forwardly limited by engagement ofits rieur end with the nipplcflllof thel'iiill und sockel. lioiiitfziiid this moveii'ieiit may be effected by 'various ings. One oit tliesc etlects the r'etrnction of the nozzle :iuloiiiiilicziily when the slr-.uni is turned otl while the other permits of ictrzict'- lingv the f nozzle inziuiuillyv The automatic nozzleY retractiug nicchiinisin shown in Figs. l.7 comprises :i return wire, cablefcord or other llcxible iiieriiber S which is secured at its front cnil to :in :ircli s at thc rcui end of Y the noz/.lc und pm; s 'troinllienco renc wzii'illy lhrough ihc .troni Currier Section, thc hollow lruuclile thereof, and through a guide opening' t tormofl in :i guide bur or cross piece 'i within the knuckle, Vthence rearwardly through tlic 4iiiu'ci' hollow Shaft. mul through nn openinrr l?" in the Cep :it the rear ciul'lliei'cof, :and thence zii'ound zrilruui U joiiriiiilrll on n bracket u secured to oiii'iountcil on l'lir cup' 7 "licnf thc no1/.zic is projected b i; steam pressure upon opening the valve fl prcpiii'uloi'jv to cleaning. the tubes, :i spring V if; strained, which spring;f i5 iareterably of the coil type :iiiil fiircd :it one end to the .slizi tt of the drum U whiie it;l opposite and secured lo llie handle :i Aor adjacent part turning therewith, So thirtwheu the wire or Cubic ie unwound from thc drum the spring' V will be wound up und iis `of the front carrier section, t-he -The manual means for effecting the return latter together with the nozzle"'is"moved.

baclrwa'rdly to its full-est extent.. in the'rear carrier sect-ion,as shown in full lines in Fig. 1, m which position ofthe parts the. front ends of the front carrier section and nozzle are almost wholly withdrawn from the path ofthe heat thus reducingburn'ing of rthe same to a minimum. clean the boiler tubes, the valve f1 is opened whereby the steam .enters the .casing and carrier sections and by its pressure' pushes the nozzle forwardly inthe frontcarrier section.

to the vfullest extent and the steam issues forwardly frein the front andrear nipples of the nozzle. Upon nowturning forwardl the handle n connected. witlrthe inner sha t latter to-A gether with the nozzle will be' .movedforwardly'in the rear carrierv section and also laterally relatively thereto owing to' thel guide opening in the `front head 'of vthe rear carrier section being on one side of the axis i of the saineQff By thismeans the steam de'- livery nipples of the nozzle are shifted radially :met successively .opposite different circular groups of the tubcsof-the tube area,

so that. upon turning the nozzle andvcarri'erl sectionsby means of the handle/.1l the steam issuing forwardly. from the nipples will he di rooted"successively into the mouths or inlet ends of the tubes'or fines of the several concentric groups or series.

lnthc forcmostpositio'n of the nozzle in. which the. same' ls also pro]ected farthest'v laterally from the axis of rotation'of the carrier, the front nipple. r is closel to the inT let ends of the outermost tubes of, the tube area so that the strain is delivered. into the same under .high pressure, thereby obtain-A ing the greatest. cleaning cfliciency of the steam on the tubes. The position ofV the front andrearnipples on the nozzle issueh thatiwhen the front carrier section 'is in its rearmost position ,and the nozzle xis projected its fullest extentby the steam pressure, the steam will be directed by the rear nippler-` at 'an angle into the central. tubes of the tube area and at comparatively close range relatively Vto the same., and steam is also delivered by the frontnipple r into those tubes arranged at one side of the cen-' tral tubes, the fron-tnipple at this time being arranged still closer to the tubes men tioned and delivering `the steam into the same in a direction parallel with the length lVhen it is desired tol Hue area.

of said tubes, as shown by lines Fig. 1. As the front carrier. sectioi11-. igt movedl forwardly together With the. pro# jected. nozzle, the front and rear, .nipples f lboth move closer to..the'e'idsv of theucs'dr tubes and also outwrdlyreletively to the center of the flue'areafDuring. .this fob; ward and out-Ward' movementofthe nozzle. the angles of its nipples relatively .to- 'the plane of. the fluel sheet-'.change constantlyA '6 -and when the'noz'zle reaches the limitof-its forward Aand out-Ward movement-the-front' nipple is arrangedelose vto "the outer. fluesand projects forwardlyand outwardly at an' .angle relativelyfto said lines, as shown by. so.

full lines in VFiglj2,whereby? the steam 'issu'- ing from' this nipple v1s deliveredat Vclose range and atan angle into these tubes and the rear nipple is.' arranged parallel .with the ues and alsodeliverstheA steam issuin" therefrom at comparatixely vclose range en lengthwise into'ftheinterinediateflues of. the v By 'this' means Ithe steam acts'on A the lues under' high press'i'rejand before lit has partly spent gits'elf," as occurs when .the go steam' isprojected-throughs space jof con,

.By curving thepoz'zle -thlffront see# 95 tion of .the carrier in .z-"themannershownthe steam delivery nipples '/during-jtheir .i

- lateral movementareretained close' to endsy -of the tubii;'imuhlonger-thanuitthenozzle'V and front. 'carrie'r. -"sectioii were==, made"'1 gg straight,inasmuch-.asastrneturelikethat last mentioned 'vi-fould cause-thefnippls. to'V Y advance and recede abruptly`- relatively 'tably arranged in 'seidgeitsixig-fa'- curved stea m -del ivery nozzle 'slidable *and out' of said carrier, means forxnovably ing the'nozz'le with'the carrier; a "ea for supplyingsteam to the Npfzzlei.'

2. A boiler tube clean mpiis ftatable Acarrier having'- in-levend composed of a tubularrear;Bastione a tubular front section -slidable en the rear s'eof.V tion at an angle to the'axis of the latter, 1125 a steam delivery nozzle' slidaliile' lengthwise." on the front carrier section. j v

ik; y A boiler-'tube cleaner A( :ornpsing a sta tionary casing having a st eaxn inlet, a cerrier having a' tubular arsetiion which is 130 -length dse-relatively thereto and a; curvedtiibulzir front -section',wiiiil-.b turns. with. the

Alength w' ata distance from its end!A .lingtli-wisc relativelythcretozinil :ilinbii'liir front si -lion which turns with the ef'irsecfront ifnrrfiei sentir f 'vergingv foin-iii idly.

rotatable in said 'easing but immovable. lengthwise relativelyv thereto' and a tubular front. section which turns 'ivith the rear seetion but is slidzibl'e relatively thereto at :in :ingle to the axis of rotiitioinj und :i steam delivery nozzle sliilalole lengthwise on vsaii'l4 front carrier seetion 4. A boiler tube cleaner coinprising :i stationary .casing having: a. stz'eiiin inlet, a cerrier lifziving a tubular reiii section which is rotatable in said' ciising but immovable rear section l3ntslidihle relatively tliere' to 'ait' iin angle to the `axis of rotation, and' :1 curved. steam il'eliveii-'fnozile slirlable lengthwise Ion 'said lfront.'czirr-ier section.

5. A boiler tiib'e cleaner comprising a stationary easing having' :i sitezin'i inlet, n carrier having ii '.tiibiilzii." i'ezuj'seetion which isv rotatable in s ziid easii'ig biitl immovable lengthwise relatively -tl'i'ereto andv :1 curved 'tubular 'front seetion'wliieli tiirris' with the ifenl'fiectioii 'but is slii'lzihle reli lv thereto zit. :in angle to the axis-of;rotation, :mil: zi curved- Steam 1'delivery nozzle sliilnb'le f ori-said tr'nnt e friet" 'seetiongsaiil enrrieras ctions :ini'l vrioj/. :?le beingeonstifneted to ijfre'vent.--ieliitive rotation of Vtlies'e 'and afstem" front enrriersiY tion, .s1-iii! lnozzl ne vided on'fits front siiltf ivithlja"lelivei`y nil yplc v:it itsl .end 'inil -iinotber' 'delivery in i'ppl'e 72 A boiler ,t'iihe cleaner. comprising a 's tii-A tionzi'ry easing lhaving sti-.fini inlet, i''car'- rief having a tiibiilar rein' section which is" vrotatable insziid raising' bn't.' ii-irno-vzibl'e Lion but is slii'liibli: relatively.:thereto:it an :ingle tothe` :ixis of' rotation', inil .zi stelim delivery nozzle sliilnbli- .lengtbviisoitm'said 'sziiil--i vile being pro'- vfleil on its front- 'with :i delivery nipple :it its end snzind another flciivery-'nipple zitti ilisiiincie f .riimV its; end, stiiil nipples direry nozzle slidable lengthwise on said front carrier section, and means for lni'nting' tli'i..

forward movement ofsnid front carrier seefron'tfezirrier section.

1().1.\ boilei-"ti1he cleaner comprising. L stationary casing lnivingr 4a Asteam inlet.; :i tubiiliir carrier 4having iivx'eiii' seetion rottiltable in sziii'l eil-sing :in l atront section .slidlengthwise' relatively tothe rezir secnble 'i tion1 n hollow outer shaft eiteniiing through the front cnil of sziiil'ciising and-connected with sind iezi'r carrier section., :Ls-crew ringI 4iriigzigiiig"with n tlireiid on snijd rezirseetion linil connected withfthe v fr-ont section, und :in innershaft :irriinged Within the oiiter sliiift and connected with said screw ring.' i

1l. A` boiler tube Cleaner comprising :i 'stationary easing hiiviiiglzi stearn inlet, :i tiibiiliir carrier having u rearsection rotatiible in said casing u nil n front. seetionfslidf able lengthwise relatively to, the: rezir secing and connected los tubular-carrier having-:i Stezirn in let'aiiilijeni' llii 'axis nfrotation, :i sti-.urn` delivery noz-` the front.x carrier' sectionv Vciniipi'isiiifr i's '/.le 'iin-iinteilV on tlioffront. carrier section', und

:i spherical. socken-aud' :i hollowspherical l; SeC- tioiiiiry casing bin/inn'r 'ii AstezixnlfileL :i'eiii`- Hifi' having ii. tiibiilsii' ri'wir section n-li is ineens for moving ibil front. ciiiiiii. svi-lion" Sbl'end in the i'iuii izzii'iici' scf-.tion :ind linvA through 'said 'carrerfaectionsf if' I 19,1 A bollen tbe Y cleaner 'a 'thular E carrier having a steamjinlet; and a ing aspherical socket, va'hollow spherical knuckle connected with the front carrier sec- V tion and vseated in said socket, a casingJ-,intV which said rear'carrier section is-Yjournaled and which is provided with a steam inlet, an outer hollow-shaft connected with said rear carrier'sectionand extending through the casing7 and an inner shaft connected with said screw ring and extending through said outer hollow shaft. f

14. A boiler tube cleaner comprising' a tubular carrier havin a steam inlet, a steam delivery nozzle slida le lengthwise of said carrier and adapted tobemoved forward by vv lthe ressure of thev steam, and a retracting mem er connected withsaid nozzle.v

'15.'A boiler tube cleaner comprising tubularcarrier havin a steam-inlet, a 'steam delivery'nozzle slidale lengthwise of said carrier and adapted to'be moved forward by the pressure of the' steam, and-means for moving said vnozzle rearwardly comprising aflexible'memb'er connected with said nozzle and extending through said carrier.

16. A boiler tube cleaner comprising a tubular carrier havin a steam inlet, a steam delivery nozzle slida le lengthwise of said carrier and adapted to be moved forward by the pressure-of the steam, and means for moving said, nozzle rearwardly cox'nprising a flexible member connected with said nozzleand extending through saidvcarrier and a drum upon which said tloxible'fm'ember is wound. Y

17.1 A boiler tube cleaner comprising a tubular carrier having a steam inlet, Aasteam delivery nozzle slidablelengthwse of Asaid carrier` and adapted tobe mov'ed forward' by the' pressuref'of the steam, and means for vmoving "sa-id nozzle rearwardly comprising* a flexible member connected with saidnoziA zle and .extending through said carrier, "nil" drumupon which said'ilexible member' is wound, and a spring operating to turn said drum in a direction for wind' the flexible member thereon and retracting the nozzle;

18. Aj boiler tube? cleaner comprisinga tubular carrier having a steam inlet anda rear rotatable -section and afront ..section rotatable with said rear .section fand mov-v able lengthwise ofthe latterjat agi-,angle tothe axis of-rotation, a steam .delivery-nozzle slidable lengthwise of ther-front carrier 'seeA tion, means for moving said frontcarrien section x lengthwisel j comprising f affhollow.. shaft, and. means 'for drawing :said nozzle -rearwardly comprising'- -a,1'flexibl emberconneoted v vith-sthejcnozzlelan vass er", Section, landga front- -Asection lj i I -1 SOTO lzle-slidable lengthwise of the front carrier section, a stationary casing in which said rear carrier section 1s ]ournalcd, means for turning said rear vcarrier section comprising with said frontcarrier section and'seated in a correspondingly shaped-socket. in said for moving Said nozzle .rearwardly comprising a flexible member 'connected with said- -nozzle and extending through said carrierv sections and shafts.

20. A'boiler tubecleaner comprising a tubular carrier having a steam inlet and a screw ring and an inner hollow Shaft eX-V -tending through said outer hollow shaft and Vconnected with said screw ring, and means rear rotatable section, and a front sectionVv rotatable with said rear section and'mow able lengthwise o f the'latter at an angle to the axis of rotation, a steam delivery nozzle slidable lengthwiseof the front'carrier section, a stationaryl casing in which said rear carrier section is journafle'd, means' for i turning said rear carrier section comprising an outer hollow shaft extending through the rear end of said casing and connected I with Said 'rear barrierzsection, means for moving said 'front carrier 'section rearwardly comprising a screw ringi engaging Awith 'a screw thread in the bore of the rear carrier section, a hollow spherical knuckle con# nectedwith'said front 'carlicr. section and seated in a correspondingly-shaped socket -in said screw ring and an innerl hollow shaft extending through said outer hollow shaft and Aconnected with 'd screw ring, and means for I noving nozzle rearwardly comprising a flexible member` connected with said nozzleand extending through said carrier sections and shafts, a-guide for said flexible member arranged in said` knuckle.

21. A boiler tube cleaner comprising al 1 tubular carrier having a steam. inlet and a rear rotatable section, and a. front Asection rotatable with'said .rear section and movable lengthwise of the latter at an angle tothe axis of rotation, a steam deliverynozzleslid able lengthwise of the front carriersection, a :stationary casing in which said rear carrier Asection "1s .journaled,. meansfor turning said mg. -rearfcarrengsection comprising' anV outer hollow extending ,through -thefreargend furl-ier Section and sented in :L correspond- .ingly shaped socket in said Screw ring and -an inner hollow shall. extending through strained by the for wird movement of the .to be Secured within a wall, a section adapted 'to be reiracte'd 'within and extended Jfrom Said casing, nd means jointodly connect-ing :mid 4sect/ion and Casing and adapted to pern init the ASoction to rnoveout of longitudinal alinemont with the casing.'

2. The combination of a casing adopted to borsecured within il. Wall, of a pluraliy ofs'ectioms elescopically connected together,

Vond Suid sections in their rtraoted positions being housed .Within the casing, the inclosing oml o said sections being rotar tably supported In the casing and connected Y lieroto to permit of turning the inilosiig Section :it an angle to said casino.

25. Thi? combination of a casing adopted to lio secured within n woll. of :i plurality of Socions onf-filed to be housed one within another and wivliin the casing and rotatably supported .villin the lattor, one of the rolaia'ole Sections being connecled to the casing and adapter? lo permit turning thereof :it un ongle in relation 'to *..lie Sai-id casing.

The coniblnatnmof a casing adapted lo be seemed Within wall, of :i plurality of sections rotraotn: o one within another, the inoloriing one oisanl sections being rotatably supported witl'iin the Casing und pivotnlly Conmfoicd to the Casing :ind adapted to permit. of ai turning at :in anglo in relation toiln: 'a: ing.

27. The combination of :i Casing' adapt-ed lo lio secured vit-hin n wall, of a plurality of swiions in telescopio relation with one :inol'ier and relraftlnlilo within the. casing. the. inolosing section being roatzibly Sixppoi'tod in alle. casing and connecled io the casing and adopled to permit n turning of the inolosing section at an angle to the casing.

QS. The combina lion with a casing adapterlto bo secured wilxin a wa-llfof a plu raliily of tolescopiczilly connect-od sections rovolubl)7 supported in said casingand adapted fo vlie housed Wirliin lli@ immo in their rolrnvlocl positions, and meunS joinlzedly co1.'- nocting said section-s with the casing and free to turn at :in angle to the casing when extended. i

fitness my hand this 8th day of Novem- 

